Q. How are Biogenous sediments formed?
Biogenous sediments are formed from the remnants of organisms that refused to be dissolved. In deeper waters, shells of plankton and other microscopic organisms form these kinds of sediments. Hydrogenous sediments are sediments solidified out of ocean water. As such, chemical reactions create these kinds of sediments.
Q. What type of marine sediment do oil deposits come from?
Crude oil is thought to form from undecomposed organic matter, principally single-celled floating phytoplankton and zooplankton that settle to the bottom of marine basins and are rapidly buried within sequences of mudrock and limestone.
Q. What part of the seafloor contains the thickest sediment layer?
On the seafloor, sediments are thinnest near spreading centers (young seafloor) and thicker away from the ridge, where the seafloor is older and has more time to accumulate. Sediments are also much thickest near continents.
Q. What sediment deposit is most commonly found around hydrothermal vents quizlet?
Hydrogenous sediments are precipitated from seawater predominantly as manganese and phosphorite nodules in certain areas near hydrothermal vents and in certain shallow tropical areas where conditions permit calcium carbonate to precipitate.
Q. Which type of seafloor resource is presently most valuable?
In terms of dollars and cents, energy (hydrocarbons) is the most important resource, while (at present) raw materials are of regional importance only. Nothing as yet has been gained from deep sea ores, although they are of great scientific interest and are potentially valuable.
Q. Which type of seafloor resource is presently most valuable quizlet?
Which type of sediment is made up of mainly diatoms and radiolarians? Today, oil and natural gas are the most valuable resources obtained from the ocean floor.
Q. What resources we get from ocean?
Ocean resources provide jobs, goods and services for billions of people around the world and have immense economic importance. There resources include food, fuel, renewable energy, minerals, sand and gravel and tourism.
